Suspension for vehicles.



A. J. P. BERTSOHY.

SUSPENSION FOR VEHICLES. APPLICATION FILE-D APR. 6, 1912.

1,071 ,547 Patented Aug. 26, 1913.

Wain/eases: Invenfiar I ,Dh JP Beriachy I sw g. flZZOrneyS UNITED srn'rns PATENT, OFFICE. A

ADOLPH J. P. BERTSCHY, OF COUNCIL BLUFFS, IOWA.

susrmvsron non VEHICLES.

Application filed April 6, 1912. Serial No. 688,880.

To all whom it may concern 7 Be it known that I, ADoLri-r J. P. BERTSCHY, a citizen of the United States, residing at Council Blufis, in the county of Pottawattamie and State of Iowa, have invented a certain new and useful Improvement in Suspensions for Vehicles, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming apart of this specification.

' are illustrated in the accompanying draw- .a forward piston 18 invention relates to suspensions for vehicles and is particularly concerned with shock absorbing mechanism. Simply stated, my invention provides a system for increasing the relative vertical mbvement between the body of a vehicle and the axles thereof, and its object is to secure this result in a simple and efficient manner. I

The improved features of my invention ing, which is a sideelevationa-l view arrangement. I

A cylinder 17 as shown in the' drawing is secured to the frame 7 and is provided with and arear piston 19. The forward piston 18 is connected to the forward bell crank lever 14: through the medium of a connecting rod 20 and the rear piston 19 is connected to the rear bell crank of the lever 14: through the medium of a connecting adjustable by a rod 21. A coil spring 22 is disposed in the cylinder 17 between the two pistons. be seen that the action of either spring 10 will vary the tension of the spring 22 and consequently vary the elfect of the spring 22 by the other spring 10, and in this way the two axle springs are inter-dependent. It

will be noted that the spring 22 is assisted in its action by formed between the two pistons and 111 orderthe air cushion which is to make this adjustable I provide a middle outlet 23 which leads to an auxiliary cylinder 24: having a piston 25 therein, this piston being backed by a spring 26 which is made screw 27. This auxiliary cylinder acts as the adjustable part of the air cushion which is formed. Anatmosphere inlet is controlled by the puppet valve 28. and it is evident that this valve will be called upon only when a vacuum is produced. I contemplate that this apparatus 'may be used just as described with atmospheric pressure but in, case greater pressure is desired, it is possible to employ a pump- 7 andthe axle 9, th1s- Specification of Letters Patent.

spring and It will Patented' Aug. 26,1913.

pump being thus operated by the vibrations of the body and being adapted, through a pipe 36 to feed the air cushion between the pistons. It will be understood that this is a very effective arrangement since the more the vibrations the greater will be the pressure produced in the cushion by the action of the pump.

I claim as new and Letters Patent: I 1. In a suspension for vehicles, a pair of axles, a spring mounted on each axle, a frame connected at one end to an end of one at the other end to an end of the other spring, levers connected with the free ends of said springs, a cylinder, and a piston in said cylinder connected to each lever.

2. In a suspension for vehicles, a pair of axles, a spring mounted on each axle, a frame connectedat one end to an end of one spring and at the other end to an end of the other sprin levers connected with the free ends of said springs, a cylinder, a piston in said cylinder connected to each lever, and an adjustable reservoir communicating. with said cylinder.

3. In a suspension for vehicles, a pair of axles, a spring mounted on each axle, a frame connected at one end to an end of one spring and at the other end to an end of the other spring, levers connected with the free ends of said springs, a cylinder, a piston insaid cylinder connected to each lever, an adjustable reservoir communicating with said cylinder, and a spring between said pistons.

4;. In a suspension for vehicles, a pair of axles, a spring mounted on each axle, a frame connected at one end to an end of one desire to secure by spring and at the other end to an end of the other spring, levers connected with the free ends of said springs, a cylinder, a piston in said cylinder connected to each lever, an

adjustable reservoir communicating with saidcylinder, a spring between said pistons, and means for increasing the pressure in said cylinder.

5. In a suspension for vehicles, avpair of axles, a spring mou ted on each axle, a-

frame connected at oneend to an end of one, I

spring and at'the other-fendito' an'end of the other spring, levers connectedwlth the free ends of said springs, a cylinder, a piston in I said cylinder connected. to each lever, an ad-- justable reservoir communicat ng with sa d cylinder, a sprm between said pistons, and

mechanism disposed between the frame and one of the springs for increasing'the pressure in said cylinder depending upon the amount of vibration.

6. In a suspension for vehicies,-a pair of axles, a spring mounted on each axle, a frame connected at one end to an end of one spring and at the other end to an end of the other spring, levers connected with the free ends of said springs, a cylinder, a piston in said cylinder connected to each lever, an adjustable reservoir communicating With said cylinder, a spring between said pistons, and a pump disposed between one axle and the frame for creating a difference of pressure in said cylinder in accordance with the amount of vibration.

In Witness whereof, I hereunto subscribe my name this 2nd day of April, A. D., 1912.

ADOLPH J. P. BERTSCHY.

Vitnes ses:

C. H; GRAHAM, R. R. OVER. 

